Stock shapes

High performance and engineering plastic solutions for the oil and gas industry

2 3

Back-up ring TECAPEEK natural

(PEEK)High thermal resistance

High mechanical stabilityExcellent chemical resistance

Typical applications of technical plastics in the oil and gas industryPlastics in application: Oil and Gas industry

Sub-

sea

conn

ecto

rs

Seal

s

back

-up

rings

Valv

e se

ats

Hydr

opho

ne h

ousi

ngs

Cove

rs

Bush

ings

Wire

Rop

e Sh

eave

s

Win

ch D

rum

She

lls

Com

pone

nts f

or R

OVs

Fram

ewor

k fo

r ROV

s

TECAPEEK natural • PEEK e e e e

TECAPEEK GF30 natural • PEEK e e e e

TECATRON natural • PPS e

TECAFORM AH natural • POM-C e e

TECAFORM AD natural • POM-H e e

TECAST T natural • PA 6 C e e e

TECAFINE PP natural • PP e e

TECAFINE PE natural • PE e e

Nowadays, technical plastics have a major

contribution to make towards improving ex-

isting solutions because modern materials of-

fer a wider range of benefits. These benefits

include:

ˌ Weight reductions

ˌ Corrosion resistance

ˌ Thermal decoupling and

ˌ Minimised noise emissions

The progress currently being made in the oil

and gas field is largely due to the use of mod-

ern materials.

Ensinger has a range of over one hundred high

performance and engineering plastic materi-

als, offering a variety of properties that benefit

a wide range of applications, including those

within the oil and gas sector. Materials from

within the range are being used increasingly

in HPHT applications.

Ensinger‘s expertise in developing and manu-facturing high performance and engineering plastic materials has enhanced its product portfolio to suit a wide range of different ap-plications.

With a number of worldwide production facili-

ties, Ensinger has a vast knowledge of plastic

material production, with techniques that in-

clude:

ˌ Extrusion

ˌ Casting

ˌ Compression moulding

ˌ Injection moulding

ˌ Compounding

ˌ Spin Moulding

ˌ Machining

SheavesTypically produced using nylon materials,

Ensinger’s TECAST range offers good wear

resistance, weight and noise reduction, as well

as UV resistance, properties that are required

within the sheaves used on the lifting and pul-

ley system on the derrick.

Hydrophone housingEngineering plastics are often used in such de-

vices as they benefit from key factors such as

impact resistance, strong chemical resistance,

dimensional stability and acoustic properties.

Seals and back up ringsIn areas of pressure such as the circulation sys-

tem materials within the Ensinger TECAPEEK

family are the perfect choice due to their novel

characteristics and behaviours in such de-

manding environments.

Remotely Operated Vehicles (ROV) ROVs used for offshore inspections are wide-

ly made with Polyolefines due to their light

weight, high impact properties and cost effec-

tiveness.

Bushings and gearsTypically in the pumping systems above

ground where TECAST (Cast Nylon) can bene-

fit from its high degree of toughness, strength

and good sliding properties.

Ensinger’s range of materials is also suitable

for use in valve seats, thrust washers, compres-

sor components, logging tools and gear appli-

cations within the oil and gas field.

As well as oil and gas, Ensinger’s products

are suitable for use in a variety of alternative

energy markets including, photovoltaic, wave

and tidal, fuel cells, bio fuels and hydropower

technology.

PEKEKKPEK, PEEKLCR, PPSPTFE, PFAETFE, PCTFEPVDF

PA 46 PET, PBT PA 66PA 6, PA11, PA 12POMPMP

PP

PE

PI

PAI

PES PPSU, PEI

PSU

PCPA6-3-T

PPE mod.

PMMA

PS, ABS, SAN

Classification of plastics

High temperature plastics

Standardplastics

Engineeringplastics

amorphous

amorphous

semi-crystalline

semi-crystalline

54

Regulations

EN ISO 23936 as a whole presents general

principles and gives requirements and recom-

mendations for the selection and qualification,

and gives guidance for the quality assurance,

of non-metallic materials for service in equip-

ment used in oil and gas production environ-

ment, where the failure of such equipment

could pose a risk to the health and safety of the

public and personnel or to the environment.

The intent of part 1 of EN ISO 23936:2009 is

to define requirements and recommendations

for the selection and qualification of thermo-

plastic materials for service in equipment used

in oil and gas production. The technical re-

quirements for qualification of thermoplastic

materials in oil and gas environments are de-

scribed in Annex B.1

The NORSOK standards are developed by the

Norwegian petroleum industry to ensure ad-

equate safety, value adding and cost effective-

ness for petroleum industry developments and

operations. The polymer materials covered by

the NORSOK standard M-710, Edition 3, Sep-

tember 2014 are elastomers and thermoplas-

tics used for offshore oil and gas production.2

Both standards require quality control tests

such as specific gravity, hardness, tensile prop-

erty and elongation tests, as well as chemical

resistance test procedures for the qualification

of thermoplastic materials exposed to fluids at

elevated pressures and temperatures over an

extended period of time.

There are no significant differences between

EN ISO 23936-1 and NORSOK M-710 for the

evaluation of thermoplastics regarding sour

fluid resistance. The test fluids and their dis-

tribution in the vessel are the same in each,

as are the acceptance criteria. The main practi-

cal difference is that ISO requires (100 ± 10)

bar of the test gas mixture to be added at room

temperature before the vessel is heated to test

temperature. In NORSOK M-710, the pressure

requirement is (60 ± 5) bar. However, there is

no reason that 100 bar cannot be specified as

a NORSOK M-710 test pressure; the key con-

dition is “to start each ageing period with the

same quantity of the sour gas mixture present

in the vessel”. There is more H2S present in

the vessel in an ISO exposure test, which will

have an, as yet, unquantified impact on perfor-

mance; based on Element experience, it is not

anticipated to be significant in the time peri-

ods employed herein.3 So testing according to

the conditions given in EN ISO 23936-1 also

gives information about the compliance with

NORSOK M-710.

Comparison of settings in EN ISO 23936-1 and

NORSOK M-710

1 Source EN ISO 23936-1:2009: Petroleum, petrochemical and natural gas industries — Non-metallic materials in contact with media related to oil and gas production — Part 1: Thermoplastics

2 Source NORSOK M-710, Edition 3, September 2014: Qualification of non-metallic materials and manufacturers, Polymers 3 Source Element Materials Technology, Laboratory

Product portfolio for the oil and gas industryMaterial availabilityEnsinger has over one hundred high perfor-

mance and engineering plastic materials with-

in its portfolio available in either rod, sheet or

tube. Materials can be modified with certain

fillers to enhance the properties and make

them perfectly suited for specific applications.

The following table displays the range of

shapes and sizes available within material

ranges that are typically used within oil and

gas applications.

Ensinger Trade Name Polymer Name Rod (dia) Sheet (thickness) Tube (OD)

TECASINT PI 6-100 mm 5-100 mm

T SERIES PEEK/PBI Please contact us for details of availability

TECATOR PAI 5-100 mm 1-40 mm 40-360 mm

TECAPEEK PEEK 3-200 mm 5-100 mm 40-360 mm

TECATRON PPS 10-60 mm 10-70 mm

TECASON PSU/PPSU 8-150 mm 10-80 mm

TECAPEI PEI 8-150 mm 10-80 mm

TECAST PA 6 C 50-800 mm 8-200 mm 50-600 mm

TECAMID PA 6/PA 66 4-250 mm 5-100 mm 25-300 mm

TECAFORM POM 3-250 mm 5-150 mm 20-505 mm

TECAPET PET 10-180 mm 8-100 mm

TECANAT PC 3-250mm 10-100 mm

Sub-sea connectors TECAPEEK natural(PEEK)Good electrical insulationHigh dimensional stabilityExcellent chemical resistance

Framework for ROV TECAFINE PP natural(PP)Light weightHigh impact propertiesCost effective

PEEK® is a registered trade mark of Victrex plc.

Ensinger®, TECA®, TECADUR®, TECAFLON®, TECAFORM®, TECAM®, TECAMID®, TECANAT®, TECANYL®, TECAPEEK®, TECAPET®, TECAPRO®, TECASINT®, TECASON®, TECAST®, TECATRON® are registered trade marks of Ensinger GmbH.

TECATOR® is a registered trade mark of Ensinger Inc.

MADE WITHVICTREX PEEK POLYMER

Pressure [bar]

H2S content [%]

EN ISO 23296-1: pressure of 100 bar before heating = 160-300 bar after heating to

200-240° C + 10% H2S

Norsok M-710, rev.2: pressure of 100 bar after heating + 2% H2S

Norsok M-710, rev.3 / EN ISO 23936-2: pressure of 60 bar before heating + 10% H2S as high H2S-setting

EN IS

O 23936-1 N

ORSOK M-710

300

200

100

02 10

76

ENSINGER Musterfirma

Frau Maja Muster01.05.20121234/12/12/XY

123456 78910 111213 01.06.2012Frau Mustermann++49 01234-5678 10++49 01234-5678 11

ENSINGER Musterfirma

01.06.2012

ENSINGER Musterfirma

Frau Maja Muster01.05.20121234/12/12/XY

123456 78910 111213 01.06.2012Frau Mustermann++49 01234-5678 10++49 01234-5678 11

ENSINGER Musterfirma

Production number

Quality assurance / Traceability

1. Invoice / delivery note The order and invoice number is shown on the invoice /

delivery note, for semi-finished products the batch num

ber is also shown on the delivery note. This allows goods

to be traced back using these numbers. A certificate to

EN ISO 10204 is issued on an order-specific basis.

2. Semi-finished products The production and manufacturing number is located on

the semi-finished product. Starting with the production or

manufacturing number, data from the production process

can be traced (production data, production protocol, con-

trol cards).

3. Compounds The lot number of the compound can be determined

from the production/manufacturing number of the

semi-finished product.

4. Raw materials The lot number of the compound is traceable back to the

formulation and so to the delivered raw material batch,

the relevant raw material specification and the safety data

sheet.

Due to product coding and statements of conformity Ensinger has direct traceability of the delivered semifinished product.

Customer · Order · Invoice988885 · 123456 · DRA12345

Production number 248086

Key facts at a glance

Ensinger secures foolproof traceability from the delivery note to the raw material.

The Ensinger quality assurance system monitors our high-performance plastic products continuously from the time of arrival of the incoming resin through to their delivery as semi-finished products. This allows us to guarantee the high-est pos¬sible standard of product quality and to minimize de-fects and complaints. This quality assurance process entails the performance of various tests at every stage of the work process.

The raw materials are processed to stock shapes in ac-cordance with manufacturer‘s instructions. The pro-duction processes and specifications used are suitably documented. An effective system of quality assurance and quality control is set out within the EN ISO 9001 certification.

FAQs:

What is the difference between testing with distilled water and seawater?Both standards, EN ISO 23936 and NORSOK

M-710 specify testing with distilled water, al-

though using the seawater might tend to get

nearer to the real environment. According to

comparison tests performed by Victrex, using

both seawater and distilled water in various

ageing tests, no major differences between the

two environments could be observed.4

What is the influence of different calculation methods for the lifetime estimation via Arrhe-nius curves (based on maximum stress or ten-sile modulus)?Modulus rises early in each exposure situa-

tion, stabilizing after 3-4 weeks; annealing

is believed to be the cause. Maximum stress

exhibits a largely linear reducing trend with

time, with increased exposure temperature

increasing the rate of change. Strain at break

follows the same pattern, but more data scat-

ter is apparent. For unfilled products, which

yield when tensile tested to failure, the opti-

mum property for life estimation is maximum

stress. Maximum stress is yield stress initially.

Tensile modulus is not a good indicator of ma-

terial deterioration, being calculated at very

low strain. Break strain is a possibility but is

subject to more scatter than maximum stress.

Linear regression analysis allows the time to

attain a 50% reduction in stress level to be cal-

culated, and these times are used as input to

the Arrhenius equation for the lifetime estima-

tion.5

How do NORSOK M-710, Edition 3 and EN ISO 23936 correlate?As a result of the joint industry effort to

prepare EN ISO 23936-2 dealing with quali-

fication of elastomers, NORSOK standard

M-710, Edition 3 refers to the requirements in

EN ISO 23936-2:2011 for elastomers. For ther-

moplastic materials, the qualification require-

ments are given directly in the NORSOK stand-

ard and aligned with requirements and format

in EN ISO 23936-2. The thermoplastics part

EN ISO 23936-1:2009 is considered as inform-

ative.

Is there a list of NORSOK qualified materials available?There does neither exist, nor are there current-

ly plans to introduce a NTS/NORSOK qualifi-

cation or approval strategy or a public listing of

qualified manufacturers in this regard.6

Do you have any other questions?

Please do not hesitate to contact our technical service:techservice.shapes@de.ensinger-online.com or by telephone on +49 7032 819 101

4 Victrex plc5 Element Materials Technology, Laboratory6 NORSOK M-710, Edition 3, September 2014: Qualification of non-metallic materials and manufacturers, Polymers